Lock-mortising machine.



G. H. HEADY.

Patented July [8, I899.

LOCK MOBTISING MACHINE.

(Application filed Nov. 8, 1398) (m; Madel.) 2 Sheets-Sheet I Q EPatented July l8, I899.

a. H, HEADY. Logx monnsma MACHINE.

(Application filed Nov. 8, 1898.

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. 2 Sheets-Sheet 2.

m: mamas Firms (10.. PHOTO-LIYHQ. wnsumamu. mc.

' a citizen of the United States, residing at Los adjustment to producemortises of different UNITED STATES,

PATE T OFFICE.

GEORGE- 1 1. HEADY, or 'LOS ANGELES, oALmonNra'AssIeNon- OF-ONE-. HALFTO ALFRED SOLANO, or SAME PLACE.

Lo'c -MoR smc' MACHINE.

smrmmoe forming a of Letters Patent No. 629,294, dated July .18, isee.

A uman filed November a. 398. Serialli'o. 695,847. (No model.)

To all whom it mag concern.-

Be a known that I, GEORGE HENRY 11mm,

Angeles, inthe county of Los'Angeles and State-of California, haveinvented new and useful Improvements in Lock-Mortising liL chines, ofwhich the following is a specification. r r i The object of my'inventionis to provide a device whereby mortises for looks \may bequickly made in doors already hung, the borin g of allthe necessaryholes being performed at one and the same time and the chiseling out ofall the webs being afterward sim ultaneously performed,'s0 that upon thecompletion of the two operations the mortise is fully formed and readyto' receive the door-lock.

A further object of my invention is to provide means whereby the powerapplied to rotate the bits willbe applied on opposite sides of the bitand not wholly at one side thereof, as has heretofore been the case. Bythis means I avoid side strain upon the bearings, and thereby preventmuch friction heretofore present in such devices.

My invention comprises the various features of construction andcombinationslof parts hereinafter f ully' set forth and claimed, wherebyI produce a machine of this character which is simple in construction,practically devoid of side strain upon the bit-shanks, durable,convenient in operation, capable of sizes to suit the size of the lockused,and will be capable of producing the mortise in any par: ticularportion of the door desired, either at the mid-lineor near to one sideor the other, as may be necessary. r The accompanying drawingsillustrate my invention. 7 I I r Figure 1 is a perspective fragmentalside elevation 'of a device embodying my inven tion in position ready toproduce a mortise in a door. Fig. 2 is alike viewof the same',-showingthe bits and bit-frame removed and the web cutting chisel in position tobe operated to cut the web from the mortise. Fig. 3 is a front view ofoneofthe separable journalbars whereby the bits are remova'bly-journaledin the bit-carrying frame. Fig; i is a guides and to slide therealong.Ears c ceive the stub-stock K.

fragmental side elevation of thebit-shanks,

the sprocket-wheels affixed ther eto,and a fragment of thesprocket-chain in place.- Fig. 5 is a fragmental view showing thesprocketchain for-driving the sprocket-wheels. Fig. 5

6 is a front elevation of the sprocket-wheels,

showing the sprocketchain in position for driving the'wheels.

A represents a base which is-adapted to straddle the door to be mortisedand is provided with a clamp-plate A, to which is secured clamp-screws aa, which are screwed through the base and adapted to press theclamp-plate against the dooror other piece to be mortised.

B B are cylindrical, guides which are arranged upon'the topof andtransverse the base, to which eachguide is connected by means of a web bb, respectively.

'(3 Care frame-guides, each comprising a standard having its foot 0 (0')provided with or formed into a 'circularclip adapted to seat upon and"embrace one of the cylindrical H a!!! I project below the clips, andset-crews D D, passing through slots 1) b' in the webs, per- 'mit theguides to be adjusted back and forth across the base and to therebyallow the mortise'to be produced in the proper position in the door. Anindex Eauda scale E is provided, one upon the base and the other .uponthe inner ear of the. clip of its respective standard or guide, tothereby indicate the position in whichthe mortise will be produced inthe door.

' F represents aframe which is mounted upon and adapted to slide uponthe guides O C.

' As shown in the drawings, this frame is composed of two journal-barsGG, each provided with journal-openings G" to receive and jour- 9c rialthe bits H H, &c., which produce the mortise, and are also provided withseats g g to receive the guides C G and slots G' to re- Eachjournal-baris divided longitudinally, the line of division lg passingthrough the journal-seats sothat each bar is composed of two partshaving complementary halves of the journal-seats, and

when placedtogether, asshown' in the drawings, will embrace in suchseats the shanks of mo i the cutting-bits and will embrace in theguideseats the guides C C. v

.' chain and to hold it taut.

Each bit H H H II 11 is provided with a sprocket-wheel h h h h h,respectively, and the wheels of the bits which are arranged incontiguous journal-seats are offset upon each other or alternatelyarranged above and below each other, as shown in Fig. 4. One of theshanks, that of the bits 11', is extended beyondthe outer face of theouter journalbar and is adapted to have a brace I secured thereto, asshown in Fig. 1, whereby the bit may be rotated. A sprocket-chain J istrained around the entire series of wheels h h, dad, and is also trainedaround a sprocket-wheel K, which is secured to a stub-stock K, which isjournaled in adj usting-hars 7s 7r, respectively secured to one-half ofthe journal-bars of the frame, and each provided with a setscrew adaptedto screw against the frame, to thereby pull the stub-stock outward inthe slots G, and to thereby tighten the sprocket- The links of thesprocket-chain are sufficiently wide to engage with both the upper andthe lower sprocketwheels and to rotate them in one and the samedirection, thereby rotating all the bits in the same direction.

Thumb-screws L L are arranged'to detachably secure the two halves of thej ournal-bars G G together. Guide-plates M M, respectively, are securedto the halves of the lower journal-bar and arranged close to theperiphcries of the sprocket-wheels, so as to hold the sprocket-chainfrom slipping out of engagement with the sprocket-wheels.

N is a gage which is secured to the base and. is adapted to be adjustedby means of atelescoping joint N and a butterfly-nutn, whereby the jointmaybe locked. This gage is adjusted to produce the mortise at the properheight from the floor in one door, and afterward no further adjustmentis needed, the

gage automatically holdin g the m ortisin g-m achine at the properheightfrom the floor, so that all that is required is to rest the bottomof the gage upon the floor and to then clamp the machine upon the door.

In Fig. 2 I have shown the mortising-chisel ready t0=be operated to cutthe webs from the mortise produced by the bits. This mortising-chiselconsists of a frame 0, which is adapted to slide upon the standards 0 Oand is provided with a cross-shaft P, which is journaled in the frameand is provided with two pinions 19 19, respectively, which are adaptedto engage with cog-racks Q Q, which are provided upon the standards. Amortising-chisel I is carried by this frame and is adapted to chisel theWeb from between the auger-holes produced by the bits. The standards orstocks 1), which carry this chisel, are each adapted to pass down intoone of the holes produced by the bits. 1

R is a scale provided upon one of the standards, whereby the depth towhich the bits enter the wood can be observed and a mortise of the exactdepth required produced.

In practical operation the base is clamped chain, engaging with oppositesides of each sprocketwheel, insuring that the motion shall be positiveand devoid'of side strain. By means'of the scale R the operator can seewhen the bits have reached a sufficicnt depth,

. when the brace is then rotated in the reverse direction and the bitsremoved from the mortise, after which the frame is removed from thestandards. placed upon the guides, as shown in Fig, 2, with the pinions'o pin engagement with the cog-racks Q Q, and by means of the crank O theshaft is rotated, thus forcing the chisel down into the mortise andchiseling the web from between the auger-holes, completing the mortiseready for the reception of the lock.

By loosening the setscrews D D the standards may be adjusted back andforth across the base, the position being indicated by the index E andscale E.

When it is desired to produce a mortise of less length than that shownin the drawings, the bit-carrying frame may be separated, as shown inFig; 3, when the bit H may be removed from the device and the mortiseproduced with the remaining bits. By removing the bit H a still shortermortise will be produced, one sufiiciently small for all practicalpurposes.

Now, having described my invention, what I claim as new,and desire tosecure by Letters Patent, is-

1. In a lock-mo'rtising machine, the com bination set forth of a baseadapted to be clamped upon the piece to be mortised and provided withtwo cylindrical guides arranged transverse the base and each connectedtherewith by a-web; standards, each provided at its foot with acylindrical clip to fit upon one of the guides and to be clampedthereupon; a frame arranged to slide upon the standards; bits journaledin the frame; and means for simultaneously rotating all the bits.

2. In a lock-mortising machine, the combination set forth of a baseadapted to be clamped upon the piece to be mortised; standards securedupon the base; a frame adapted to slide upon the standards; bit-shanksjournaled in the frame and each provided with a sprocket-wheel fixedthereto, alternating sprocket-wheels; a sprocket-chain adapted to engagewith all the sprocket-wheels; and means for driving the sprocket-chain.

3. In a lock-mortising machine, the combination set forth of a baseadapted to be clamped upon the piece to be mortised standards securedupon the base; a frame adapted to slide upon the standards and dividedlongitudinally into two parts, each part having complementary halves ofjournal-seats for Then the chisel-frame O is the bit-stocks; means fordetachably sgeciifing the halves of the frame together; bits 'frenhe;and :idapted to operate to draw the stub-stock outwardandto therebytighten the to chain; and means for driving the chain.

GEO. H. HEAbY.v

Witnesses:

ALFRED I. TOVVNSENJ), JAMES R. TOWNSEND.

